Les,
the only reason is that I, as an electronics novice, was afraid to please it at the input level - thinking it could possibly damage the uC, especially since adding it to the original desing caused problems (surely by erronious soldering).
Also, my apology - I thought I had answered the question of PB override placement - it is definately still placed on C/E, not B of the transistors (still have it set up)
As far as placing it at the input: Would I not need a voltage rather than just a closure of input circuit, or is the JD-VCC/ VCC combo already taking care of the voltage to trigger the relay?
Rainer
the only reason is that I, as an electronics novice, was afraid to please it at the input level - thinking it could possibly damage the uC, especially since adding it to the original desing caused problems (surely by erronious soldering).
Also, my apology - I thought I had answered the question of PB override placement - it is definately still placed on C/E, not B of the transistors (still have it set up)
As far as placing it at the input: Would I not need a voltage rather than just a closure of input circuit, or is the JD-VCC/ VCC combo already taking care of the voltage to trigger the relay?
Rainer
Hi Rainer,
What is the reason for putting the manual push buttons on the output of the relay board rather than the input ? Although you would need to add two diodes (Say 1N4148 and these only cost £0.0135 + VAT each) that would be much less than the saving in cost by using a cheap low current push to make push button instead of a 10 amp changeover push button.
Les.
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